Vehicle-spring.



E; T. WELLS.

VEHICLE SPRING.

APPLICATION FILED JULY 19, 1913.

1 1 1 8,708. Patented Nov. 24, 1914.

EZRA T. WELLS, OF CHICAGO, ILLINOIS.

VEHICLE-SPRING.

Specification of Letters Patent.

Patented Nov. 24, 1914.

Application filed July 19, 1913. Serial No. 779,975.

To all whom it may concern:

Be it known that I, Eznx T. W'ELLs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vehicle-Springs, of which'the following is a specification.

My invention relates to improvements in vehicle springs.

One of the salient objects of my invention is to provide a. spring for vehicles, and more especially for automobiles, which is adapted to readily adjust itself to suit the variations of load imposed thereon and which will cause as easy riding of the vehicle body when carrying a light load as when it is carrying a heavier load; which is resiliently yielding under ordinary uses and capable of absorbing the shocks due to any sudden or abrupt movement of vehicle Wheels, without imparting such shocks to the body.

Other and further objects of. my invention will become readily apparent to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 is a side elevation of the preferred form of spring. Fig. 2 is an end elevation of the same. Fig. 3 shows a side ele vation of a slightly modified form. Fig. 4 is an end elevation thereof. Fig. 5 is a side elevation of another, among the many variations that my improved spring may take. Fig. 6 is an end view of the same.

In all the views the same reference charactors are employed to indicate similar parts. In the drawing 10 is the upper member and 11 is the lower member of a leaf spring.

12 is the base of the spring, to which the vehicle body is attached and 13 is the base to which the axle of the running gear is attached. The ends, or terminals, 14 and 15, respectively, are so related that the former or inner terminal, in every instance, is curved on a shorter radius and is included within the confines of the curved portion of the outer terminal 15 and these two terminals'are connected together by means of shackle bars 16 and 17. The bolts 18 and 19 of the shackle bars pass through eyes made in the terminal ends of the longest leaf of the respective springs and the inner terminal member 14, in every instance, is contained between the pair of shackle bars that are connected to the terminals thereof and to the outer terminal of the companion spring. The shackles, 16 and 17, are cut away, as at 20, to permit free movement of the inner spring without coming in contact with the terminal 14, which the said shackle bars cross, so that any relative vertical movement of the two springs will not cause chafing or noise resulting from frictional engagement of the inner spring with the shackles that connect the terminals of the two springs together.

"Fig. 1 shows a complete scroll of two convvE-lutions of the longest leaf of the inner spring, while Fig. 3 shows a portion or incomplete turn of the scroll. Either form comes within the contemplation of my invention and while these two figures show both of the springs at both. ends to be of the same relative curvature, in the structure depicted by Fig. 5 each spring has a long curved terminal and a short curved terminal and the same relation of the respective terminals is maintained, with the exsprings tends to curve the terminals of the springs on shorter radii but if the springs are properly proportioned the same rclation of curvature will exist under imposed loads, as when the springs are not compressed by the effect of the load.

lVhile I have shown in the drawing, two complete elliptic spring members to coinpose a pair in each complete spring, it is evident that a spring having parts cut away on either side of the supports, thereby utilizing less than a whole spring above or below would perform the same character- .istic functions of a complete elliptic spring, and would fall within the'spirit of my invention.

l-Iaving described my invention, what I claim with a view and desire to secure by Letters Patent is;

1. A vehicle spring comprising two cooperating leaf members having their terminal ends curved on different radii, about substantially the same center said ends I?)- :ated one Within the other, and a shackle "Crossing the inner spring and connecting said ends together. p

2. A vehicle springcomprising two cooperating leaf members having their terminal ends curved on different radii about substantially the same center, said ends located one within the other, and each end provided with a terminal eye, and a shackle Y Games of this patent may be obtained. for

radius than the curve of the respective body part; the terminal end of one spring having a shorter curve than the terminal end of the other spring, the end having the shorter curved terminal being within the longer curved terminal and a shackle connecting said ends together and crossing the inner springs.

i. A vehicle spring comprising two cooperating leaf members having their ends curved to provide scrolls, one within the other, and a shackle crossing the inner spring connecting the free terminals of said scrolls.

In testimony whereof I hereunto set my hand in the presence of two witnesses.

, EZRA T. WELLS. In the presence of FoRnE BAIN,

MARY F. ALLEN.

five cents each, by addressing the commissioner of Patenta,

Washington, D. t3. 

